Rotary pump.



A. F. FORD.

ROTARY PUMP.

APPLIUATION FILED IBB.21,19;3.

/ f l/ I @24M/WT@ ATTORNEYS A. P. FORD. ROTARY PUMP. APPLIOATION FILED rnB.21.

Patented Dec. 2, 1913.

2 S T H ET 2.

f1 TTORNE YS ANDREW FRANCIS FORD, 0F WALLA WALLA, WASHINGTON.

ROTARY PUMP.

Specification of Letters Patent.

Patented Dec. 2, 1913.

Application filed February 21, 1913. Serial No. 743,855.

l To all whom t may concern.'

Be itknown that I, ANDREW F. FORD, a citizen of the United States, and a resident of IValla Valla, in the county of Walla Talla and State of Washington, have invented a new and Improved Rotary Pump, of which the following is a full, clear, and exact description.

This invention relates to improvements in rotary pumps, and has for an object to provide an improved structure in which the pumping apparatus may be arranged to operate as a horizontal pump or a vertical pump.

Another object of the invention is to provide an improved rotary pump structure with a swinging abutment pivotally mount ed at each end and a substantially oscillating piston, whereby the friction is reduced to a minimum, and the fluid being pumped is forced positively through the pump.

A still further object of the invention is to provide in a rotary pump an improved casing structure associated with a piston having a roughened or substantially corrugated portion for feeding or scraping sand or other foreign matter from the easing and depositing the same into the groove in the casing.

In carrying out lthe objects of the invention, a casing is provided having one or more substantially annular bores or chambers in which a substantially rotating or oscillating piston is arranged. This piston has pivotally connected therewith an abutment, which in turn is pivotally connected with the frame whereby the piston is not allowed a complete rotary movement, but a partially rotar movement and a substantially hack and forth movement. The abut- 'ment together with the piston, substantially divides the pumping chamber into two parts so that water or other fiuid may he `taken in one compartment while being forced out the other. In order to provide a more or less continuous stream from the pump, a plurality of pistons are pro-- vided and operated in any desired sequence. A practical embodiment of the invention is represented in the accompanying drawings forming a p art of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal vertical section through a pump embodying certain fea-tures of the invention; Fig. 2 is a section through Fig. 1 on the line 2-2; Fig. 3 is a section similar to Fig. 2 except that the piston is shown in a different position; Fig. f1 is a longitudinal vertical secy tion through a slightly modified form of the invention from that shown in Fig. 1;

and Fig. 5 is a section through Fig. f1 on the line 5--5.

In forming rotary pumps it is desirable to provide mechanism which may be arranged in a housing so as to operate in a horizontal plane or in a vertical plane. The housings arranged in horizontal planes are adapted especially for wells or for being submerged in surface water, as for instance a river, while the housings arranged so as to extend in a vertical plane are adapted to be positioned upon any suitable support adjacent the water or other fluid to be pumped.

Referring te the accompanying drawings by numerals, 1 indicates the easing of a horizontally arranged pump, and 2 the supporting legs. This pump is adapted to be submerged, as for instance in a well, and to take in water at openings 3 and 4;, and force the water out the eye or side 5, and from thence through a suitable pipe (not shown) to any convenient point. The casing 1 has connected therewith a peripheral member 5 and a top 6, the top 6 being formed with an opening in which the extension 7 of cap 8 is fitted. Part of the extension 7 is formed in the shape of a spider structure 9 for guiding the shaft 10, which shaft is also fitted in a bearing portion 11 of base 1, and eX- tends upwardly to any convenient point where power may be connected therewith (the power means not being shown). If desired, the openings 3 and 4 could be provided with valve members though the same are not necessary.

Connected with and, if desired, formed integral with member 5 is a fin or web 12, which is provided with a central opening 13 so that water or other fluid may flow 'from chamber 14 to chamber 15, and from thence out through the cap 8. In the drawings only two chambers, namely 14 and 15, have been disclosed, but it will be evident that any desired number of chambers could be provided without departing from the spirit of the inventien.y These chambers are arranged preferably `perfectly round, as shown in Figs. 2 and 3, so as to accommodate pismove the various rollers 26 and 26.

tons 16 and 17. Each of the pistons 16 and 17 is provided with a cut away portion 18, and a recessed bearing portion 19. The head 20 of the abutment 21 is tted into the bearing recess 19, and the head 22 of abutment 2l is fitted into a suitable bearing notch 23 in the casing 5', so that the piston 16 is allowed to rotate to a limited extent, and to swing from one 'side of the casing 5 to the other in a rotary and sliding movement. Each of the pistons 16 and 17 is provided with an opening 24 arranged opposite the abutment A21 so that the water or other fluid in chamber 15 may be forced into the center of the piston and from thence through opening 13, and finally out through cap 8. As the pistons are now arranged and operated, the water or other fluid is drawn in through openings 3 and 4 in the casing and then forced into the eye or center of the pistons. From this place the water is forced upwardly through cap 8 to the discharge point.

-In order to cause the pistons 16 and 17 to have a proper movement, a spider structure 25 is connected with shaft 10 so arsnto e rollers 26 are intended to rotate around shaft 10 in a'smaller path or orbit than rollers 26 so as yto give an even movement to the piston as the same moves from one position to the other. In the drawings the spider structure 25 is shown formed of one piece, but it will be evident that an independent spider structurecould be provided for each piston without departing from the vspirit of the invention.

In operation when it is desired to use the pump, shaft 10 is rotated so as to move the rollers 26 and 26 to the right, whereupon the pistons will be moved from one position to the other. During the starting of the rotary movement the piston 16 is in the position shown in Fig. 2; the same will move gradually from that position to the position shown in Fig. 3, and then from the positionshown in Fig. 3 back to the position shown in Fig. 2. In moving from the position shown in Fig. 2 to the position shown in Fig. 3, water is taken in through opening 4 and. what water is already in the chamber 15 will be forced out through the passageway 24 in the piston. As is well known,'the operation of one piston of this kind would not give a constant flow of water so that two pistons have been associatedtogether and arranged to work alternately.

In Figs. 4 and 5 will be seen a slightly modified form of the invention in which the casing 5 is arranged vertically and is provided with a central hollowed out po-rtion 27 for receiving sand or other foreign matter. Plugs 28 are provided in the sides of the casing for allowing the cleaning of the hollowed out portion 27 whenever desired. In this form of the invention the Loeoaei pistons 29 and 30 are each provided with a corrugated or roughened portion 31 designed 'to force or feed sand or -other foreign matter entering through opening 32 into the hollowed out portion 27. -In this way the sand will be sifted or eliminated from the water being pumped, and also will not cause any considerable injury to the pistons or other pumping mechanism. Aside from these differences, the construction shown in Figs. 4 and 5 is the same as the preferred structure, with the additional difference that the outlet opening 32 is at the top and merges into the chambers 14 and 15 at the top, and the inlet is through the side cap 8. It will be observed that the structure disclosed in Figs. 4 and 5 operates opposite to the preferred structure, namely, the driving shaft and other moving parts move in a reverse direction.

Having thus `described my invention I 'claim as new and desire to secure by Letters Patent p 1. In a pump of the class described, a casing provided with an 4inlet opening and an outlet opening, a rolling piston arranged in said. casing formed with a central opening, and an aperture leading therefrom, an abutment pivotally connected with the casing and with the piston, and means for operating the piston for forcing water from said inlet through the aperture in the piston and from thence through the opening in the piston to said outlet opening.

2Q In a pump of the class described, a casing formed with an inlet and an outlet, aV piston arranged in said casing formed smaller than the interior bore of the casing, means for giving the piston an oscillatory movement in the casing, and an abutment co-acting with the casing and the piston, said abut-l ment being hinged to said lcasing at one end and hinged to said piston at theopposite end, said piston having an aperture extending from the periphery to the center, said center 'being in free communication with the outlet opening in said casing whereby when said. piston is moved fluid will .be drawn in through said inlet operging into the casing and forced through the aperture` in the casing.

3. In a pump of the class described, a casing formed with an inlet opening and an out-let opening and a chamber in communication with said opening, a piston arranged in saidchamber and mounted so as to have a rolling movement in the casing, means 'for moving said piston, and an abutment pivotally connected with the casing and-also pivotally connected with the piston, said piston being formed with a central opening therethrough, and a radiating bore extending from the central opening to the piston, said radiating bore being arranged adjacent said piston to the outlet opening in the abutment whereby when said piston is moved fluid will be drawn into the casing and forced therefrom through said piston.

4. I-n a rotary pum of the class described, a casing formed Wi a chamber, an inlet opening, an outlet opening, said openings being in free communication with said cham-- ber, an eccentrically mounted piston arranged in said chamber formed with a central opening, said piston separating said outlet opening from said chamber, said piston being also formed With a radiating bore, means for moving s'aid piston, and an abutment pivotally connected with the piston and with the casing whereby the piston is caused to roll when actuated.

5. In a pump of the class described, a casing formed with a chamber, an inlet opening and an outlet opening, said openings being in free communication with said chamber, an eccentrically arranged piston positioned in said casing and separating the chamber from the outlet opening, said piston bein formedwith a centralbore, a radiating ore extending from the central bore to the periphery, means engaging said piston for moving the same, an a swinging abut ment extending at a tangent to the piston, said abutment bein pivoted at one end to the piston and at t e opposite end to said casing.

6. In a pump of the class described, a casin formed with an inlet opening, a cham er, and an outlet opening, said chamber being in free communi/cation lwith said inlet opening and said outlet opening, an eccentrlcally mounted piston arranged in saidl chamber separating the outlet opening from the chamber, said piston being formed with a central bore, and a radiating bore extending from the central bore to the periphery of the piston, an abutment pivotally connected with the piston adjacent said.

lradiating bore and also pivotally connected with said casing, said abutment being adapted to swing but arranged to continually ex-` tend at a tangent to the piston, and means engaging said piston for moving the same and for causing the piston to progressively contact with said casing so as to continually separate said inlet opening from said radiating bore, said abutment being arranged between said inlet opening and said radiating bore whereby as said plston is moved fluid will be taken into said chamber and forced through said radiating bore into the central bore in the piston and from thence to said outlet opening.

7. In a rotary pump of the class described, a casing provided with a plurality of spaced chambers having centrally arranged apertures in the partition therebetween, an eccentric rotatably mounted piston arranged in each of said chambers, each of said pistons being formed with a central bore and with a radiating bore, means for moving said pistons, and an abutment having an enlargement at each end fitted into socket bearing members in said respective pistons and in said casing.

8. In a rotary pump of the class described, a casing formed with an inlet opening and an outlet opening and a chamber in communication with said openings, an eccentrically mounted rotating piston arranged in said chamber formed with a central bore and a radiating bore, said piston dividing said outlet opening from said chamber, said piston being alsoformed with a bearing notch and a cut away portion arran ed on the periphery, said casing being ormed with a bearing notch opening into said chamber, an abutment formed with enlarged ends, said enlarged ends fitting into the bearing notch in the piston and 1n said casing, and the body of the abutment substantially occupyingl the space of said cut away portion in t e piston, and means for moving said piston in such a manner as to cause it to remain continually in contact with said casing.

In testimony whereof I have signed my name'to this speciication in the presence of two subscribing witnesses.

' ANDREW FRANCIS FORD.

Witnesses:

JAMES F. TrnnmNeToN, R, J. RUGKMAN. 

